The cities of the Los Angeles Gateway Region (Gateway Region), water agencies, and interested stakeholders developed an Integrated Regional Water Management Plan (IRWMP) in 2011. These cities share water resources; have common water quality, water supply, and stormwater runoff problems and issues, and are demographically similar. These common traits provided a unique opportunity to jointly find common, integrated, and coordinated solutions for the region’s water-related issues through the IRWMP process. The Gateway Region formed a Joint Powers Authority (JPA) under California law to steer their planning efforts and provide solid governance for plan development and implementation.
There are currently 24 agencies and cities that have adopted the Plan.